chore(compiler): followup fix for PR#11846 (angular#11870)

Original PR set [] to any, but any[], is a tighter type and still
works for SNC enabled consumers of the emit.

modules/@angular/compiler/src/output/ts_emitter.ts

@@ -86,7 +86,7 @@ class _TsEmitterVisitor extends AbstractEmitterVisitor implements o.TypeVisitor
     }
     const result = super.visitLiteralArrayExpr(ast, ctx);
     if (ast.entries.length === 0) {
-      ctx.print(' as any)');
+      ctx.print(' as any[])');
     }
     return result;
   }